http://www.sciencenetlinks.com/

http://www.biologyinmotion.com/
http://www.biologycorner.com/
http://learn.genetics.utah.edu/
http://www.execulink.com/~ekimmel/index.htm
XeroBio
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookTOC.html
Online Biology Book from Maricopa University
http://www.ebiomedia.com/
http://serendip.brynmawr.edu/sci_edu/biosites.html
http://www.biology.arizona.edu/
The Biology Project: The University of Arizona
http://commtechlab.msu.edu/sites/dlc-me/zoo/
The Microbe Zoo
http://www.cellsalive.com/
Cells Alive
http://www.hhmi.org/biointeractive/
BioInteractive from HHMI
The Biology Place
http://www.biology.com/
The Biology Place is an excellent resource for any biology class. Lots of great information on current topics in all areas of biology. Lots of on-line student activities in the biological sciences. Highest recommendation for all biology teachers.
http://home.comcast.net/~clupold96/
http://www2.edc.org/weblabs/WebLabDirectory1.html
Genetics web lab


scilinks


Online Simulations
http://www.explorelearning.com/
Interactive